Quick drying permanent inks won't bead or smudge. Available in brilliant colors in fine (0.6mm), super fine (0.4mm) and medium (1.0mm) line widths.
Lumocolor AV Marker Sets
Staedtler Mars Lumocolor Permanent Markers Fine Point Assorted Colors Pack Of 4 - Office Depot
Staedtler Lumocolor 317M Permanent Markers Medium Tip 1.0mm,4 Color
Staedtler Lumocolor Non-Permanent Water-Based Markers, Assorted Ink, Super Fine Tip, Pack of 4
STAEDTLER Lumocolor Universal Pen, Medium, Felt Tip, Permanent Marker, Box of 4 Assorted Color Pens, 1.0
Staedtler LumoColor Permanent Marker - Tokyo Pen Shop
Speciality Markers - Theodist
Staedtler Lumocolor Permanent Markers and Sets
Staedtler Lumocolor Permanent Pen - Fine - Blue